Measuring device for a figure
CA 2130583 A1 · Owner: Suh, Jae-Whan · Inventors: Suh, Jae-Whan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a measuring device for measuring the area of a closed curve in which there is provided a body rotating freely along the center of a perpendicular shaft at the state fixed to the ground. For measuring the length, a actuating member sliding horizontally penetrates through the body and is supported thereon. As tracing means for tracing the line of the figure is engaged with the forward end of the actuating member. A rotatation angle of the body is measured in unit of 0.072° by a degree index plate fixed to a fixed shaft while a moving distance, is measured in unit of 0.01 m by a photo-sensor incorporated in the body. As the tracing means traces the line of the figure on the basis …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed August 22, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 22, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 22, 2016.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.